Plaster ground



A. OLIVER.

MASTER GRouNn.

APPLICATION FILED MAY 29| 1920. 1,403,520. Patented Jan. 17, 1922.

2 SHEETS-SHEET l.

` R ATTORNEY A..0L|VER.

PLASTER GROUND? APPLICATION' FILED MAY 29, 1920.

1,403,520, Patented Jan. 17, 1922.

2 SHEETS-SHEET 2.

o. f, By Amen-r L/vE/r UNITED STATESv PMEN'I OFFICE.

specmcaztion of Letters ramt; Patentd jan, 17, 1922,

Application led Hay 29, 1920. Serial No. 385,122.

To all whom 'it may camera:

Be it known that I, ALBERT OLIVER, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State vof New York, have invented certain new and useful Improvements in Plaster Grounds, of which the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view are: to provide a plurality of metal reinforcing bonds, and a separating member held between said bonds; to provide a sheet of material for spreading plaster upon both surfaces which are reinforced by metal to form a bond for the plaster spread on said sheet; and to simplify and cheapen the means of connecting said bonding structures to hold the same upon said sheet.

Drawings. Y

Description.

As seen in the drawings, the plaster ground is preferably constructed from a sheet of weather proof building paper 9. The sheets 9 are disposed between and structurally connected with woven wire sheets 10 and 11. As seen by comparison of Figures 1 and 2 the woven wire sheets 10 are of closer and stouter,

mesh than the sheets 1,1. The sheets 10 are used preferably for the face of the ground, while the sheets 11 are on the back or inner side of the ground. The mesh of the sheets 11 at the back of the ground is larger, the purpose being to reinforce or strengthen the resistance of the aper 9 to the pressure put upon the groun by the operator when troweling the plaster. It is not, however, necessary that any discrepancy between the wire sheets should obtain, as both sheets inay be constructed from theI same weight and character of material.

'tain plaster applied to both sides of the ground The wire sheets 11 have horizontall disposed parallel structure members A12. Ihese members are connected b the strands 13 of the sheet. At predetermined intervals these members are joined to form loop offsets 14. The offsets 14 are in practice pushed through the paper 9 to project on the opposite side thereof, and through the sheet wire 10, when the same is superposed on the paper 9. The loopoffsets 14 are disposed in line so that straight wires 15 may be threaded through the said 'oifsets to bind the two sheets or' layers of wire fabric together.

The extremities 16 of the wires 15 are bent over the outer edgesl of the sheets 10 and l1, and of the paper 9, being clinched thereover to form a continuous and permanent structure. The intervals between the loop osets 14 vertically and horizontally are a matter of design, and vary in accordance therewith. In all arrangements suiicient strength is imparted to prevent the separation between the wire structures further than the flexibility of the paper 9 will accommodate, the object being at all times to avoid breaking the paper 9 by the pressure incident t0. applying laster to the ground.

Any sulta e met od for applying the ground to the standing structure may be employed. In the drawingsthe standing structure is shown as having light standing studding. In such an event, the grounds are fastened to the studding by means of staples 17. Where, however, the uprights are of metal, the grounds may be applied thereto by the usual method of using clips, bolts, rivets or tying wire, as the case may be.

In all cases when the grounds have been mounted, they offer a'surface suitable for the application of plaster or other material, which` is spread against the paper 9, which is held up to the pressure of the trowel by the support afforded by the sheets 10 and 11 as the oase may be. Where possible or desirable, the grounds are plastered on both sides, thereby forming thin, space-saving structures, as when manufacturing partitions; where the grounds may be suspended on a thin structure such as may be provided in netal, or where they may be hung as a cur- The from an overhead structure.

when set affords a thin partition sufficiently strong to resists all the usual strains to which such a construction is subjected. When the grounds are used in this manner, it is obvious that an exceedinglI thin or space-sav- -to construct the grounds in the factory and ship them to the job where they are being installed.

Ulazms.

1. A plaster ground comprising a plurality of sheets of wire o en mesh material; a sheet of continuous sur ace material disposed between said wire mesh; and means for structurally uniting said wire mesh material and the interposed continuous surface material, said means comprising Wires running at right angles to each other, certain of the wires having laterally projecting eyes extending through all of the material from one side and the other wires engaging said eyes.

2. A plaster ground comprising a sheet of close texture fabric; a plurality of open wire mesh fabrics, one disposed at each side of said close texture fabric, the structural members of one of said wire fabrics having formed thereon offset loops for protruding through said close texture fabric; and means threaded through said offset loops and overlying the other-wire fabric for structurally uniting said wire fabrics and said close structure fabric. I

3. A plaster Ground comprising a sheet of close texture fabric; a plurality of open Wire mesh fabrics, one disposed at each side of said close texture fabrlc, the structural members of one `f said wire fabrics having formed thereon offset loops for protruding through said close texture fabric; means threaded through said offset loops and overlyin the other Wire fabric lfor structurally unitlng said Wire fabrics and said close tex ture fabric; and means for holding the threaded members in permanent service re lation. l

4. A plaster ground comprising a continuous sheet of fibrous material; a plurality of sheets of open metal, one at each side of said fibrous sheet; and means for structurally uniting said sheets of metal, comprising horizontal Wires disposed at one side, with laterally projecting offset loops projecting through the other side, and vertical tie Wires extending through vertically alined loops and held at the ends thereof against displacement.

` ALBERT OLIVER. 

